group-expression1

    Specifies one or more groups to be removed. Wildcards and a comma
    list are allowed. When you use wildcard characters or a comma
    list in the group name, /IF_PRESENT is the default. (CMS does
    not return an error message if group-expression2 does not contain
    group-expression1.)

 group-expression2

    Specifies one or more groups from which the groups in group-
    expression1 are to be removed. Wildcards and a comma list are
    allowed.

 remark

    Specifies a character string to be logged in the history file
    with this command, usually used to explain why the command was
    entered. The remark is enclosed in quotation marks. If no remark
    was entered, a null remark ("") is logged.